Fox and Minimal path
Fox Ciel wants to write a task for a programming contest. The task is: “You are given a simple undirected graph with n vertexes. Each its edge […]
Fox
Fox and Card Game
Fox Ciel is playing a card game with her friend Fox Jiro. There are n piles of cards on the table. And there is a positive integer […]
Fox and Box Accumulation
Fox Ciel has n boxes in her room. They have the same size and weight, but they might have different strength. The i-th box can hold at most x i boxes […]
Fox and Perfect Sets
Fox Ciel studies number theory. She thinks a non-empty set S contains non-negative integers is perfect if and only if for any ( a can be equal to b), . Where operation xor means exclusive or […]
Fox And Jumping
Fox Ciel is playing a game. In this game there is an infinite long tape with cells indexed by integers (positive, negative and zero). At […]
Fox And Names
Fox Ciel is going to publish a paper on FOCS (Foxes Operated Computer Systems, pronounce: “Fox”). She heard a rumor: the authors list on the […]
Fox And Travelling
Fox Ciel is going to travel to New Foxland during this summer. New Foxland has n attractions that are linked by m undirected roads. Two attractions are called adjacent […]
Fox And Dinner
Fox Ciel is participating in a party in Prime Kingdom. There are n foxes there (include Fox Ciel). The i-th fox is a i years old. They will have dinner […]
Fox And Polygon
Fox Ciel just designed a puzzle game called “Polygon”! It is played using triangulations of a regular n-edge polygon. The goal is to transform one triangulation to another […]
